Will Non-Dual Channel Matched RAM work in my motherboard then?
We've found that there is a strong chance that your DDR memory will work in Dual Channel mode as long as it fits the requirements of Dual Channel operation (two of the same types of memory, same size modules, both with similar timing settings). We've even seen situations where people put two different types of RAM together and had no problems.
A good estimate would be to assume that 9 out of 10 attempts to put two unpaired DDR sticks into Dual Channel operation will work. The ONLY thing you can lose by buying "single channel" memory for use in Dual Channel mode is that manufacturers will not provide support and replace your memory if it won't work in dual channel mode, whereas if Dual Channel memory fails to work in Dual Channel mode, the manufacturers will help you resolve the problem and possibly replace the memory to ensure proper Dual Channel operation.